CN104132817B - The detection method of motor vehicle external characteristics dynamic and intelligent detection platform - Google Patents
The detection method of motor vehicle external characteristics dynamic and intelligent detection platform Download PDFInfo
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- CN104132817B CN104132817B CN201410399534.6A CN201410399534A CN104132817B CN 104132817 B CN104132817 B CN 104132817B CN 201410399534 A CN201410399534 A CN 201410399534A CN 104132817 B CN104132817 B CN 104132817B
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Abstract
The detection method of motor vehicle external characteristics dynamic and intelligent detection platform, motor vehicle is allowed to simulate in actual travel using detection platform, at various speeds with load change, and different road surface docking, in the situation such as split, the external characteristics such as axle weight, sideslip, the braking of high low speed, power, oil consumption, waste gas discharge, sealing, headlamp, steering indicating light, fog lamp, marker and appearance profile whole index is rapidly completed disposably, and form the curve of pictorialization, uploading network becomes common data resource, for social sharing.Endogenous factor due to eliminating vehicle itself, so that measurement ABS, EBD, ESP, cruising constant speed system are possibly realized, judge motor vehicle external characteristics is formulated in Automotive Industry Chain unified standard, external characteristics detection is carried out to links such as research and development, exfactory inspection, in-use automotive detection, maintenances, historical breakthrough occurs in place, time, pattern, management.Be worldwide Internet of Things, public safety, vehicle energy saving environmental protection provide a standard.
Description
Technical field
The present invention relates to technical field of automobile detection, and in particular to motor vehicle external characteristics dynamic and intelligent detection platform
Inspection car method.
Background technology
Since automobile is born, the development of current vehicle testing technique derives from Europe, Japan and other countries.For many years
Come, automotive check theory, detection technique, testing equipment etc. are gradually formed with automotive engineering raising and the expansion of production scale
The ripe metering test system of a set of each link from the industrial chains such as research and development, production, in-use automotive, maintenance.This system
Core be that new car sizing carries out the actual travel dynamic data of the examination of road test with proving ground, as judging that indices are
No qualified unique technical detection means.In fact, the professional proving ground possessed due to the whole world is few, and cost is high
And land occupation area is huge, it is desirable to simulate the conditions such as different weather distributions, Different Ground, geology, cause various countries to be tried
The place region dispersiveness tested is big, is limited by test site landing airdrome length, causes, because of the difference of various test conditions, to test journey
Sequence is subject to larger restriction.Higher plus place corresponding management and maintenance requirement, test needs professional team to complete, and testing expenses are held high
Expensive, testing crew is dangerous big, and test period is long, and efficiency is low, but the detection that final detection result is still relied in the examination of road sets
Standby individually collection is formed, and real data cannot exclude the impact of the interior originality index of instruction carriage itself.Test data knot in the examination of road
Fruit be indirectly, qualitatively, and cannot accurate quantification so that testing result confidence level is widely different.Therefore, automobile how
The state of simulation the examination of road completes external characteristics test on stand, is currently that automobile is researched and developed, shaped, the car load that dispatches from the factory checks each link
Maximum technical bottleneck.
The braking of Hyundai Motor, oil consumption and waste gas discharge, light are automotive safety trip and the most important finger for ensureing environmental protection
Mark.The automotive check industry of countries in the world is all found one with dynamic bench test pattern to replace extensively should at present at present
The pattern of Steady-state in Low Speed detection.I.e. automobile adopts 3 D stereo plane high-speed motion on test-bed, only replaces in the past
Can be in the allokinetic pattern of two dimensional surface low speed.It is dynamic that this simulation actual travel ground of automobile and speed are carried out on stand
State detects that, as the new technologies such as high speed ABS, EBD, ESP, cruising constant speed system occur, the technology of most critical is jack horse test bed
Control system make vehicle make the motion of three-dimensional coordinate in traveling plane.At various speeds, various loads change and do not go the same way
Face docking, the situation such as split, under same stand, complete the external characteristics to car load each index, including axle weight, break away, braking,
Oil consumption, discharge, sealing, headlamp, taillight, appearance profile etc. carry out disposable gathered data, and upload network, for society
It is shared.It is the certainty of the technological progress that current automotive check industry faces.
Under same test-bed, the different road conditions operating mode of computer settings, and the different time periods, can be once
Property draw the curve and chart of the change of multiple external characteristics continuous parameters.Can also the same time set same driving cycle, from
And curve and chart are made to the relevance between each external characteristics index, and by each parameter half interval contour correlation analysis, can be
While there is the mutual Changing Pattern between each index consecutive variations and index on same chart, above-mentioned relevance curve chart, on
Reaching network becomes common data resource, for social sharing.Stand is rapidly completed all index measurements of external characteristics and index chart
Change collection, uploading network becomes common data so that automotive check occurs greatly optimization in place, time, pattern, management
Space.It is possibly realized the project that cannot much detect at present.So that upstream and downstream link formulates unification in Automotive Industry Chain
Examination criteria be possibly realized.Vehicle safety performance is caused from this change, energy-conserving and environment-protective performance, intelligent management have history
Break through.
The content of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of motor vehicle external characteristics dynamic and intelligent inspection
Platform is surveyed, is realized by consumption detection device, in front and back wasted nickel catalyst device, light detecting device and body sealing detection means
The external characteristics of the lower motor vehicle of fast state operation is detected.
The second object of the present invention is to provide a kind of motor vehicle external characteristics detection method, and which utilizes dynamic analog platform reality
The external characteristics index of the lower detection motor vehicle of the now full speed state operation of motor vehicle, substitutes traditional the examination of road and low speed detection of platform.
For achieving the above object one, the present invention is adopted the following technical scheme that：
A kind of motor vehicle external characteristics dynamic and intelligent detection platform, it is characterised in that include：
Motor vehicle simulation road conditions dynamic detection platform is arranged on the lower section that external characteristics detects support, detects support with external characteristics
Be fixedly connected, in detection platform, be mounted with vehicle speed sensor, wheel speed sensors and device for power absorption, transmitting device speed,
Rotating speed and power signal send into signal source aggregation.
Have by formula axle weight, sideslip compound detection platform before being arranged on motor vehicle simulation road conditions dynamic detection platform.Monitor station
Interior axle retransmits sensor, sideslip sensor signal sends into signal source aggregation carries out A/D process.
Oil consumption exhaust gas analysis system, the oil consumption exhaust gas analysis system are arranged on the lower section of motor vehicle dynamic detection platform, oil
Consumption exhaust gas analysis system is provided with oil consumption, discharge sampling probe part, and the sampling probe part connection frequency conversion fan flow that adjusts is dilute
Release, frequency conversion fan part connection flow gauge reconnects gas treatment and flue gas measurement part, the transmitter differential pressure letter in flowmeter
Number and wasted nickel catalyst part signal send into signal source aggregation carry out A/D process.
Master controller operating desk, is arranged on the left front of detection platform, and inside is provided with signal source aggregation, and various controls are always
Line, as man machine operation interface.
Front side light, marker, profile scan detection components, including motor, turn-screw, mobile connecting rod, far and near front photograph
Light spot acquisition component, marker, car plate, front outline acquisition component；Far and near headlamp hot spot acquisition component, marker, car
Board, profile acquisition part are fixedly connected with mobile connecting rod, and mobile connecting rod detects frame central axis with external characteristics, and in distance
- 3 meters of positions in 0.5 meter of frame forward position are installed and level run, and the signal for being gathered is sent into signal source aggregation and carries out A/D process.
Rear side light, marker, car plate, profile scan component, including motor, turn-screw, mobile connecting rod, rear light
(fog lamp, indicator, taillight, brake lamp etc.) hot spot acquisition component, marker, car plate, profile acquisition part, sealing leak detection are swept
Retouch part；Rear light (fog lamp, indicator, taillight, brake lamp etc.) hot spot acquisition component, marker, car plate, profile acquisition portion
Part, sealing leak detection sweep unit are fixedly connected with mobile connecting rod, and mobile connecting rod detects frame central axis with external characteristics, and
Installing and level run less than 1 meter of position on rear side of frame, the signal for being gathered is sent into signal source aggregation and carried out at A/D
Reason.
Left and right sides sealing leak detection scanner uni marker, profile scan part, including motor, turn-screw, mobile connecting rod
And scanner, scanner is fixedly connected with mobile connecting rod, and mobile connecting rod detects frame central axis with external characteristics, and in distance
Frame side is installed less than 0.5 meter of position and level run, and the signal for being gathered is sent into signal source aggregation and carries out A/D process.
Top sealing leak detection scanner uni profile scan part, including motor, turn-screw, mobile connecting rod, scanner are swept
Retouch device to be fixedly connected with mobile connecting rod, scanning means is arranged on the top that external characteristics detects frame, and the signal for being gathered sends into letter
Number source aggregation carries out A/D process.
Sound level, track keep, distance-light automatic switchover detection components include, sound level collector and distance light angle signal occur
Device mounting bracket, on the inside of front side light, profile, marker scan components reset position, frame upper is provided with sound level to support
Meter and high beam, bottom are located at below detection chassis plane, have motor, drive lead screw and mobile connecting rod, mobile connecting rod in support
Connection lanes mark line chart bar generator plate, mobile connecting rod are moved vertically up and down.
For achieving the above object two, technical scheme is as follows：
A kind of motor vehicle external characteristics detection method, it is characterised in that comprise the steps：
Step A, by automobile to be detected with 5KM/H speed by axle weight, sideslip testboard.Axle is retransmitted into sensor and sideslip
Sensor sample signal is sent into signal source aggregation and carries out A/D process；
Step B, vehicle enter detection test platform, make four wheels of automobile to be detected be respectively placed in detection test platform
Left front cylinder, right front roll, left back cylinder, on right back roll, inwardly block automobile to be detected using the roller that tests the speed in front and back
Front and back wheel, make the circumference of the wheel and corresponding cylinder and the roller that tests the speed of vehicle to be detected tangent, by controller
Press axle tuple according to, in real time dynamic is accurate adjust before and after the matching of cylinder group rotary inertia；
Step C, startup vehicle, using the frictional force corresponding drum movement of drive between wheel and cylinder, reach what is specified
After low speed speed, touch on the brake startup brake apparatus moment, measure the initial velocity Vo that roller collects measurement in brake moment, and
Braking time T of detection vehicle, obtains the mean braking deceleration Va of automobile by sensor, that is, obtains braking distance S=
VoT1+0.5VaT, wherein T1 are the fixed reaction time, so as to judge braking ability during low speed；
Step F, startup cylinder make vehicle speed reach more than 65KM/H, start cruising constant speed system, after computer starting
Side vehicle lane keeps the motor of component, mobile lanes mark line chart bar generator plate to rise, and computer controls figure bar is sent out
Raw device traffic lane line left and right change by setup program, changes the gearratio of left back cylinder linkage by computer controls, makes figure
When the change of bar generator traffic lane line is consistent with gearratio change, whether the speed change of the roller that tests the speed is identical, so as to judge
Whether cruising constant speed system meets standard.
Step D, drum speed reach 80-120KM/H fast states, start brake apparatus, are starting Vehicular brake device
Moment, measure the near front wheel, off-front wheel, left rear wheel, speed V1, V2 of off hind wheel, V3, V4 respectively using the roller that tests the speed, utilize
First tachogenerator and the second tachogenerator measure the rotating speed of left back cylinder and right back roll respectively, after left back cylinder and the right side
The rotating speed of cylinder is vehicle body travel speed V5 after Vehicular brake device starts；
The numerical value of V1, V2, V3, V4 and V5 of different time points after the brake apparatus of computer collection vehicle starts, will
The numerical value of V1, V2, V3, V4 and V5 of corresponding time point brings below equation into：
The near front wheel slip rate=(1-V1/V5) * 100%；
Off-front wheel slip rate=(1-V2/V5) * 100%；
Left rear wheel slip rate=(1-V3/V5) * 100%；
Off hind wheel slip rate=(1-V4/V5) * 100%；
The slip rate curve after brake device for car startup is drawn, vehicle ABS system is judged using the slip rate curve for obtaining
System braking ability；
Step E, using the wheel of a lift assemblies lifting vehicle, to change the pressure that the wheel of vehicle applies to cylinder
So as to change the frictional force between wheel and cylinder.Or the friction media between change tire and cylinder, obtain different height
Low attachment coefficient, realizes the ABS anti-locks detection of high and low and docking, split road conditions.The intelligent electrodeless speed governing that cylinder is linked
When device gearratio b1 and b2 is to certain ratio, braking of the various speed Imitating automobiles under different radii turning can be measured
Braking distance during steering；
Step G, it is adjusted to load power accordingly by computer controls Retarder, gasoline vehicle speed to be measured reaches phase
After the speed answered, discharge, oil consumption sampling probe component are sampled in automobile exhaust port, and gas sample passes through Flow-rate adjustment Fan Regulation stream
CO in the pressure sensor signal and flue gas measurement of amount, blower fan action and V cone flow meters2Gas concentration signal is compared
Afterwards, adjust in gas dilution processor, treat CO2When concentration=3% is stable, the air pump of waste gas discharge detection components will be sampled
C0,CO2, HC, NOx gas concentration detected, the signal of gas concentration change sends into signal source aggregation carries out data processing, so
Afterwards by the calculating of carbon balance method, the gas concentration of oil consumption and discharge waste gas is thus converted into.According to oil consumption and when being emitted on each
Between the data variation put automatically form time change cyclic curve.Diesel vehicle passes through the direct sampled measurements smoke intensity of opacity smoke meter
Value；
Step H, by front side of computer controls, rear side, left and right sides and top scanning means synchronous scanning, carry out profile,
Sealing, marker, light signal collection, its light light spot image signal, contour edge collection sensor signal and sealing
Detection signal send into signal source aggregation carry out data processing, wherein first gather headlamp (distance-light) bulb image pattern,
Optical centre when being positioned as headlamp orientation measurement by calculating centre of figure position.The sealing leak detection of synchronous scanning collection
Signal is sent into signal source aggregation and is processed, and will determine sealing property by different attenuation rates.The marker figure bars of collection
Send into signal source aggregation to be processed, obtain the geometric profile size of car body；
Step I：Automobile opens all light, meanwhile, rear side sound level measurement and distance light angle generator are opened, and automobile presses loudspeaker
, traversing of probe support resets and scans, and each light signal is sent into signal source aggregation and processed in front and back, the figure bar optical threshold of headlamp
And after the headlamp geometrical central axis contrast that gathered of image geometry position and step H, obtain the light intensity of each headlamp and upper
The optical shift amount of lower left and right, and other signals collectings judge the light intensity of light respectively.
Step J：Computer controls test the speed roller relieving, and automobile exits measurement zone.
The beneficial effects of the present invention is：
Using simulation crossing detection platform, complete to simulate motor vehicle external characteristics each index in actual travel, bag
Include the disposably collection number such as braking ability, the performance of electron assistant driving system, oil consumption, discharge, air-tightness, headlamp, taillight
According to, and data processing and data sharing are carried out by WIFI upload networks, unified automobile external characteristics can be specified to detect mark
Standard, ensures the vehicle safety and the feature of environmental protection under the states such as research and development, production, in-use automotive, maintenance.
Description of the drawings
Fig. 1 is the schematic diagram of the simulation the examination of road detection platform of the present invention；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is present invention simulation the examination of road detection platform use state schematic diagram；
Fig. 4 is the side-slip apparatus schematic diagram of invention simulation the examination of road detection platform；
Fig. 5 is the side structure schematic diagram of the present invention；
Fig. 6 is the positive structure schematic of the present invention；
Fig. 7 is the structure schematic diagram of the present invention；
Fig. 8 is the top structure schematic diagram of the present invention；
Fig. 9 is the detecting step schematic diagram of the present invention；
Figure 10 is the signal source aggregation schematic diagram of the present invention.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further：
As shown in Fig. 1,2,3,4,5,6,7,8,9, the motor vehicle simulation the examination of road detection means of the present invention, including front platform
100th, rear stand 200, link assembly 300；On front platform 100, pivot is connected to left front cylinder 110 and right front roll 120, both which
Pivot center overlap, and respectively correspond to automobile to be detected the near front wheel and off-front wheel, left front cylinder 110 and right front roll
120 rotating shaft is coupled positioned at its intelligent electrodeless speed regulator 130 therebetween by one so as to which what the two can be synchronous turns
It is dynamic, and the first intelligent electrodeless speed regulator 130 can be according to needing to adjust its gearratio, before changing left front cylinder 110 and the right side
The gearratio of cylinder 120.
Stand 200, are above articulated with left back cylinder 210 and right back roll 220 afterwards, and the pivot center both which overlaps, and
Correspond to the left rear wheel and off hind wheel of automobile to be detected respectively, the rotating shaft of left back cylinder 210 and right back roll 220 by positioned at its two
The second intelligent electrodeless speed regulator 230 between person couples so as to the rotation that the two can be synchronous, and second intelligent electrodeless is adjusted
Fast device 230 can be according to needing to adjust the gearratio of left back cylinder and right back roll 120.It should be noted that in adjustment, needing
The gearratio for ensureing the gearratio and the first intelligent electrodeless speed regulator 130 of the second intelligent electrodeless speed regulator 230 is identical.It is left
Back roll 210 and right back roll 220 are corresponding with before and after left front cylinder 110 and right front roll 120 respectively, right back roll 220 turn
The axle first line of a couplet is connected to one first tachogenerator 260, and in the rotating shaft of left back cylinder 210, synchronously connection has one second tachogenerator
240。
Link assembly 300 is for by the 210 synchronous connection of left front cylinder 110 and left back cylinder, which includes two universal joints connection
Axle device 301, and two ends are connected in the connecting portion 302 of two gimbal couplings, 301 medial extremity, two gimbal couplings respectively
301 outboard end is respectively by rotating shaft and the left back cylinder of T-shaped reversing box 111 and T-shaped reversing box 211 and left front cylinder 110
210 rotating shaft connection, by T-shaped reversing box 111 and T-shaped reversing box 211, can make left front cylinder 110 and left back cylinder 210 synchronous
Rotation, the gearratio of T-shaped reversing box 111 and T-shaped reversing box 211 is 1, makes 210 rotating speed of left front cylinder 110 and left back cylinder
It is identical.
Left front cylinder 110, the front end of right front roll 120 and left back cylinder 210, the rear end of right back roll 220 are mounted on
One speed measuring device.As a example by installed in the speed measuring device on right back roll 220, the speed measuring device is included positioned at right back roll 220
The roller 214 that tests the speed of rear end, is articulated with a swing arm 212 in the rotating shaft of right back roll 220, and the roller 214 that tests the speed is arranged on the pendulum
On the free end of arm 212, and the speed measuring device also includes a cylinder 213 for being used for 212 free end of lifting swing arm.It is above-mentioned to test the speed
Device not only can detect the rotating speed of corresponding wheel, meanwhile, in front and back corresponding two groups of speed measuring devices can also respectively to
The wheel of automobile is inside blocked, makes automobile that detection platform will not be run out of in test process.
In order to adapt to the vehicle of different wheelbases, a change wheelbase is provided between above-mentioned front platform 100 and rear stand 200 and is stretched
Mechanism 400, two movable ends of the change wheelbase telescoping mechanism 400 are fixedly connected with front platform 100 and rear stand 200 respectively；Even
The connecting portion 302 of bar assembly 300 is the flexible spline that a two ends are connected with the medial extremity of two gimbal couplings 301 respectively
Axle.Thus, by adjusting the distance between front platform 100 and rear stand 200, change left front cylinder 110, right front roll 120
Distance before pivot center and left back cylinder 210, the pivot center of right back roll 220.
The rotating shaft first line of a couplet of right front roll 120 is connected to a flywheel group 150；The motor vehicle simulation the examination of road detection means is also included
One Retarder 250, the rotating shaft of right back roll 220 are synchronously connected in the input rotating shaft of Retarder 250, and first tests the speed biography
Sensor 260 is connected in the output end rotating shaft of Retarder 250.In the test for oversize vehicle, flywheel group can be increased
150 weight, so as to the movement inertia of real simulated automotive；Retarder 250 is then the small-sized vehicle of auxiliary, starts electric whirlpool
Stream machine 250, which applies countertorque to right back roll 220, produces brake force such that it is able to the motion of real simulation kart
Inertia.
The motor vehicle simulation the examination of road detection means also includes a body part and is fixed on the variable-frequency motor on front platform 100
140, the connection synchronous with the rotating shaft of left front cylinder 110 of the rotary shaft of the variable-frequency motor 140.As the size of cylinder is larger, move
Inertia is also larger, drives left front cylinder 110 to rotate so increasing variable-frequency motor 6, increases the rotating speed of each cylinder, so that this
The bright minicar that can detect that engine power is relatively low, makes the applicability of detection platform more extensive.
Oil consumption exhaust gas analysis system 2, the oil consumption exhaust gas analysis system 2 are arranged on the top of motor vehicle simulation device 1；
Controller 3, is arranged on the top 2 of oil consumption exhaust gas analysis system, as man machine operation interface.
Side ultrasonic scanning device 4, including motor 41, turn-screw 42, mobile connecting rod 43 and ultrasonic scanner 44,
Ultrasonic scanner 44 is fixedly connected with mobile connecting rod, and side ultrasonic scanning device 4 is arranged on external characteristics detection frame 11
Two sides.
Front ultrasonic scanning device and headlight light scanning apparatus 5, including motor 51, turn-screw 52, mobile connecting rod 53,
Ultrasonic scanner 54 and headlight optical scanner 55, ultrasonic scanner 54 are fixedly connected with mobile connecting rod 53, headlight optical scanning
Device 55 is arranged on the lower section of ultrasonic scanner 54, is fixedly connected with mobile connecting rod 53, front ultrasonic scanning device and headlight
Light scanning apparatus 5 is arranged on the front that external characteristics detects frame 11.
Back side ultrasonic scanning device and back light light scanning apparatus 6, including motor 61, turn-screw 62, mobile connecting rod 63,
Ultrasonic scanner 64 and back light optical scanner 65, ultrasonic scanner 64 are fixedly connected with mobile connecting rod 63, back light optical scanning
Device 65 is arranged on the lower section of ultrasonic scanner 64, is fixedly connected with mobile connecting rod 63, back side ultrasonic scanning device and back light
Light scanning apparatus 6 is arranged on the back side that external characteristics detects frame.
Top ultrasonic scanning device 7, including motor 71, turn-screw 72, mobile connecting rod 73 and ultrasonic scanner 74,
Ultrasonic scanner 74 is fixedly connected with mobile connecting rod 73, and top ultrasonic scanning device 7 is arranged on external characteristics detection frame
Top.
The lift assemblies that Vehicle Axles are detected for lifting, the act are mounted on front platform 100 and rear stand 200
The support 510 that component includes being fixed on front platform or rear stand is risen, installed in air spring lift unit 520 on support 510.
In detection, the axletree 910 of wheel 900 is placed in into air spring lift unit 520, pressure of the wheel to corresponding cylinder can be adjusted
Power, as cylinder and the coefficient of friction of automobile tire are changeless, changes lower pressure and can just change tire with cylinder
Frictional force, is accurately controlled lower pressure, it is possible to the frictional force situation that real simulated automotive is run on different road surfaces.
Detection of headlight flow process：
1. the CCD camera that scanning board is installed before, when automobile is not turned on light and floor light is opened, at 0.4 meter -1.3 meters
From a left side to having intake vehicle right and left distance light and dipped beam car light figure in height, car light image calculates each car light when CCD is imaged
Geometric center, set that each car light benchmark zero point i.e. 0 is left remote, 0 in the vicinity, and 0 is right remote, and 0 is right near；
2. headlamp is opened, the corresponding scanning direction from right to left of CCD camera of front scanned version, absorbs the photograph of each car light
Mingguang City's spot, and reduce the figure of hot spot by the threshold values of setting and calculate a corresponding light spot image center point of car light, i.e., 0 is left remote by 0
Left remote by 1,0 is 01,0 right remote 0 right remote by 1 in the vicinity in the vicinity, and 0 right nearly 0 right nearly 1；
3. contrast 01 deviates the distance of zero point, calculates side-play amount respectively, and respectively by the light intensity contrast light intensity in CC images
Standard.
Sealing, outer profile size testing process：
Ultrasonic signal emitters are placed in automobile bodies, makes in car body, to produce the ultrasonic field of certain acoustic pressure, it is internal
Ultrasonic wave can reveal transmitting from inside to outside from gap, and the acoustic pressure for revealing ultrasound is become with the size variation of leak size
Change, by ultrasonic scanner surface sweeping outside car body, obtain detection signal and be sent to signal source aggregation, obtained by computer disposal
The positions and dimensions of leakage.
Using simulation crossing detection platform, complete to simulate motor vehicle external characteristics each index in actual travel, bag
Include the disposably collection number such as braking ability, the performance of electron assistant driving system, oil consumption, discharge, air-tightness, headlamp, taillight
According to, and upload network and carry out data processing and data sharing, unified automobile external characteristics examination criteria, guarantee can be specified to grind
Send out, production, in-use automotive, the vehicle safety under the state such as maintenance and the feature of environmental protection.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (1)
1. the detection method of motor vehicle external characteristics dynamic and intelligent detection platform, it is characterised in that comprise the steps：
Step A, by automobile to be detected with 5KM/H speed by front side shaft weight, sideslip test suite, axle retransmits sensor and sideslip
Sensor signal is sent into signal source aggregation and carries out A/D process；
Step B, detection test platform is placed in, makes four wheels of automobile to be detected be respectively placed in the left front rolling of detection test platform
On cylinder, right front roll, left back cylinder, right back roll, the car in front and back of automobile to be detected is inwardly blocked using the roller that tests the speed in front and back
Wheel, makes the circumference of the wheel and corresponding cylinder and the roller that tests the speed of vehicle to be detected tangent, presses axle tuple by controller
According to, in real time dynamic is accurate adjust before and after the matching of cylinder group rotary inertia；
Step C, startup vehicle, using the frictional force corresponding drum movement of drive between wheel and cylinder, reach the low speed specified
After speed, touch on the brake startup brake apparatus moment, measure the initial velocity Vo that roller collects measurement in brake moment, and detect
Braking time T of vehicle, obtains the mean braking deceleration Va of automobile by sensor, that is, obtains braking distance S=VoT1+
0.5VaT, wherein T1 are the fixed reaction time, so as to judge braking ability during low speed；
Step D, startup cylinder make vehicle speed reach more than 65KM/H, start cruising constant speed system, mobile lanes mark
Line chart bar generator plate rises, computer controls figure bar generator traffic lane line left and right change by setup program, by calculating
Machine control break is left front, left back or the right side before, the intelligent electrodeless speed regulator of right back roll linkage, make figure bar generator traffic lane line
When change is consistent with gearratio change, whether the wheel speed change of the roller that tests the speed is identical, so as to judge whether cruising constant speed system accords with
Standardization；
Step E, drum speed reach 80-120KM/H fast states, start brake apparatus, in the wink for starting Vehicular brake device
Between, the near front wheel, off-front wheel, left rear wheel, speed V1, V2 of off hind wheel, V3, V4 are measured respectively using the roller that tests the speed, and utilize first
Tachogenerator and the second tachogenerator measure the rotating speed of left back cylinder and right back roll, left back cylinder and right back roll respectively
Rotating speed be Vehicular brake device start after vehicle body travel speed V5；
The numerical value of V1, V2, V3, V4 and V5 of different time points after the brake apparatus of computer collection vehicle starts, will be corresponding
The numerical value of V1, V2, V3, V4 and V5 of time point brings below equation into：
The near front wheel slip rate=(1-V1/V5) * 100%；
Off-front wheel slip rate=(1-V2/V5) * 100%；
Left rear wheel slip rate=(1-V3/V5) * 100%；
Off hind wheel slip rate=(1-V4/V5) * 100%；
The slip rate curve after brake device for car startup is drawn, vehicle ABS system system is judged using the slip rate curve for obtaining
Dynamic performance；
Step E, using the wheel of a lift assemblies lifting vehicle, with change pressure that the wheel of vehicle applies to cylinder so as to
Change the frictional force between wheel and cylinder；Or the friction media between change tire and cylinder, obtain different height attached
Coefficient, the ABS anti-locks detection of high and low and docking, split road conditions is realized, the intelligent electrodeless speed regulator that cylinder is linked is passed
It is dynamic than b1 and b2 to certain ratio when, braking of the various speed Imitating automobiles under different radii turning can measure steering
When braking distance；
Step G, it is adjusted to load power accordingly by computer controls Retarder, vehicle speed to be measured reaches corresponding speed
Afterwards, discharge, oil consumption sampling probe component are sampled in automobile exhaust port, and gas sample is moved by Flow-rate adjustment Fan Regulation flow, blower fan
Make the CO in the pressure sensor signal and flue gas measurement with V cone flow meters2It is after gas concentration signal is compared, dilute in gas
Processor regulation is released, CO is treated2When concentration=3% is stable, C0, CO that the air pump of waste gas discharge detection components will be sampled2,HC,NOx
Gas concentration is detected that the signal of gas concentration change sends into signal source aggregation carries out data processing, then by Carbon balance
The calculating of method, is thus converted into the gas concentration of oil consumption and discharge waste gas；Become according to oil consumption and the data for being emitted on each time point
Change automatically forms time change cyclic curve；Diesel vehicle passes through the direct sampled measurements smoke intensity value of opacity smoke meter；
Step H, by front side of computer controls, rear side, left and right sides and top scanning means synchronous scanning, carry out profile, sealing
Property, the collection of marker, light signal, its light light spot image signal, contour edge collection sensor signal and sealing propertytest
Signal send into signal source aggregation carry out data processing, wherein first gather headlamp distance-light bulb image pattern, by meter
Optical centre when nomogram shape center is positioned as headlamp orientation measurement；The sealing leak detection signal of synchronous scanning collection send
Enter signal source aggregation to be processed, sealing property will be determined by different attenuation rates；The marker figure bars of collection sends into letter
Number source aggregation is processed, and obtains the geometric profile size of car body；
Step I：Automobile opens all light, meanwhile, rear side sound level measurement and distance light angle generator are opened, and automobile is honked,
Traversing of probe support resets scanning, and each light signal is sent into signal source aggregation and processed in front and back, the figure bar optical threshold of headlamp and
After the headlamp geometrical central axis contrast gathered by image geometry position and step H, the light intensity and up and down of each headlamp is obtained
The optical shift amount of left and right, and other signals collectings judge the light intensity of light respectively；
Step J：Computer controls test the speed roller relieving, and automobile exits measurement zone；
Step K：By all detection data charts, public resource is become by wired or wireless upload network, for social sharing.
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| CN108195595B (en) * | 2017-12-21 | 2019-07-23 | 重庆厚全科技发展有限公司 | Speed platform brake apparatus |
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